Display shelf



FIG. 1 is a top, front, and right side perspective view of a display shelf showing my new design;

FIG. 2 is an enlarged right side elevational view thereof, the left side being a mirror image of that shown;

FIG. 3 is an enlarged rear elevational view thereof;

FIG. 4 is an enlarged top plan view thereof;

FIG. 5 is an enlarged front elevational view thereof; and,

FIG. 6 is an enlarged bottom plan view thereof. 

The ornamental design for a display shelf, as shown and described. 